Air Cleaner Housing: Description and Operation

Purpose and Operation
The air induction system supplies clean air to the throttle body. It operates as follows:

^ Outside air enters from an air intake in the engine air box through an opening in the front grill.

^ The filtered air travels through the mass air flow sensor and air cleaner outlet tube to the throttle body.

^ The positive crankcase ventilation (PCV) system is also supplied clean air through a fitting on the air cleaner outlet tube.

^ Air induction noise is effectively tuned by means of the sealed cover with integral resonator, which is part of the mass air flow sensor.

Components
All engines are equipped with:

^ replaceable dry-type air cleaner element (ACL element).

^ Mass Air Flow (MAF) sensor.

^ Air cleaner outlet tube.

^ Intake plenum.

^ Throttle body.